22107945 has 16 divisors (see below), whose sum is σ = 36911232. Its totient is φ = 11278080.

The previous prime is 22107941. The next prime is 22107959. The reversal of 22107945 is 54970122.

It is not a de Polignac number, because 22107945 - 2² = 22107941 is a prime.

It is a super-2 number, since 2×22107945² = 977522464246050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22107941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31696 + ... + 32385.

It is an arithmetic number, because the mean of its divisors is an integer number (2306952).

Almost surely, 2^22107945 is an apocalyptic number.

It is an amenable number.

22107945 is a deficient number, since it is larger than the sum of its proper divisors (14803287).

22107945 is a wasteful number, since it uses less digits than its factorization.

22107945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64112.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 22107945 is about 4701.9086550038. The cubic root of 22107945 is about 280.6614675914.

The spelling of 22107945 in words is "twenty-two million, one hundred seven thousand, nine hundred forty-five".